DE1211025B - Method for removing the lower crankshaft bearing shells of internal combustion engines - Google Patents

Method for removing the lower crankshaft bearing shells of internal combustion engines

Info

Publication number
DE1211025B
DE1211025B DEM62218A DEM0062218A DE1211025B DE 1211025 B DE1211025 B DE 1211025B DE M62218 A DEM62218 A DE M62218A DE M0062218 A DEM0062218 A DE M0062218A DE 1211025 B DE1211025 B DE 1211025B
Authority
DE
Germany
Prior art keywords
bearing shell
crankshaft
bearing
internal combustion
combustion engines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEM62218A
Other languages
German (de)
Inventor
Dr-Ing Hugo Scobel
Franz Steidle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM62218A priority Critical patent/DE1211025B/en
Priority to CH1004065A priority patent/CH437916A/en
Priority to NL6509489A priority patent/NL6509489A/xx
Priority to DK385465AA priority patent/DK106475C/en
Priority to GB33455/65A priority patent/GB1055408A/en
Priority to US481774A priority patent/US3413709A/en
Publication of DE1211025B publication Critical patent/DE1211025B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0046—Shape of casings adapted to facilitate fitting or dismantling of engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/02—Crankshaft bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49698—Demounting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53687—Means to assemble or disassemble by rotation of work part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/16—Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature
    • Y10T403/1633—Utilizing fluid pressure

Description

Verfahren zum Ausbau der unteren Kurbelwellenlagerschalen von Brennkraftmaschinen Die Erfindung betrifft ein Verfahren zum Ausbau der unteren Kurbelwellenlagerschalen von Brennkraftmaschinen, wobei die Lagerschalen unter der Kurbelwelle herausgedreht werden.Method for removing the lower crankshaft bearing shells of internal combustion engines The invention relates to a method for removing the lower crankshaft bearing shells of internal combustion engines, with the bearing shells unscrewed from under the crankshaft will.

Der Ausbau der Grundlagerschalen von Kolbenbrennkraftmaschinen bereitet erhebliche Schwierigkeiten, will man nicht den gleichzeitigen Ausbau der Kurbelwelle mit in Kauf nehmen. Man hat sich zwar bereits damit geholfen, daß nach Abnehmen des oberen Lagerdeckels die untere Lagerschale längs des Umfangs mit einem Seil umschlungen wurde, dessen Enden an einer Zugvorrichtung befestigt sind, bei deren Betätigung die Schale herausgedreht werden konnte. Eine derartige Handhabung ist jedoch sehr umständlich.The expansion of the base bearing shells of piston internal combustion engines is preparing considerable difficulties if one does not want to remove the crankshaft at the same time take with you. You have already helped yourself after losing weight of the upper bearing cap, the lower bearing shell along the circumference with a rope was wrapped, the ends of which are attached to a pulling device, at which Actuation the shell could be unscrewed. One such handling is but very cumbersome.

Des weiteren ist es bekannt, zum erleichterten Ausbau z. B. von Wälzlagern, welche mittels konischer Hülsen befestigt sind und durch Passungsrost fest-sitzen in den Sitzflächen der Hülsen, Nuten anzubringen und in diese rostlösende Mittel unter Druck einzuführen. Auf diese Weise soll das Eindringen des Rostlösungsmittels auf die ganze tragende Fläche erleichtert werden.Furthermore, it is known to facilitate expansion z. B. of roller bearings, which are fastened by means of conical sleeves and are firmly seated by fretting rust in the seating surfaces of the sleeves, to make grooves and to introduce rust-releasing agents under pressure into these. This is intended to facilitate the penetration of the rust solvent onto the entire load-bearing surface.

Zum Abbringen von auf Achsen oder Wellen sitzenden Maschinenteilen hat man ferner bereits eine an der Innenfläche der Nabe befindliche Aussparung mit Flüssigkeit gefüllt und diese von außen unter hohen Druck gesetzt, so daß die Nabe von der Welle abgedrückt wird. Eine derartige Maßnahme ist jedoch beim Entfernen von Lagerschalen für Kurbelwellen nicht ohne weiteres geeignet, weil die Lagerschale einerseits durch die Kurbelwelle und andererseits durch den Lagerdeckel begrenzt ist.For removing machine parts sitting on axles or shafts one also already has a recess located on the inner surface of the hub Liquid filled and this is put under high pressure from the outside, so that the hub is pulled off the shaft. However, one such measure is upon removal of bearing shells for crankshafts not readily suitable because the bearing shell limited on the one hand by the crankshaft and on the other hand by the bearing cap is.

Demgegenüber wird zum Ausbau von Kurbelwellenlagerschalen von Brennkraftmaschinen erfindungsgemäß vorgeschlagen, die Außenfläche der Lagerschale unter Flüssigkeitsdruck zu setzen und die Kurbelwelle bei abgehobenem oberem Lagerdeckel zu verdrehen. Durch diese Maßnahme werden unterschiedliche Reibungsverhältnisse an der Lagerschale hergestellt, nämlich kurbelwellenseitig eine höhere Flächenbelastung, während auf der Lagerschalenaußenseite durch den ölfilm nur eine geringe Reibung vorhanden ist. Die Schale wird demzufolge an den Wellenzapfen gepreßt und bei dessen Verdrehen mitverdreht, so daß sie leicht von Hand nach etwa einer Viertelumdrehung entfernt werden kann.In contrast, the expansion of crankshaft bearing shells of internal combustion engines proposed according to the invention, the outer surface of the bearing shell under liquid pressure to set and to turn the crankshaft with the upper bearing cover lifted off. By this measure creates different friction conditions on the bearing shell, namely a higher surface loading on the crankshaft side, while on the outer side of the bearing shell due to the oil film there is only little friction. The shell becomes accordingly pressed against the shaft journal and rotated when it is turned so that it is easy can be removed by hand after about a quarter turn.

in den Zeichnun-en ist ein Ausführungsbeispiel der Vorrichtung zur Durchführung des Verfahrens dargestellt. Es zeigt F i g. 1 eine Stimansicht, F i g. 2 einen Schnitt nach Linie II-II der F i g. 1. Die Kurbelwelle 1 ist in bekannter Weise irn Lagerstuhl 2 in der oberen (nicht gezeichneten) und unteren Lagerschale 3 gelagert. Zum Entfernen der Lager.7 schale 3 ohneAusbau oder Anheben der Kurbelwelle wird der, obere Lagerdeckel mit der oberen Lagerschale entfernt und in eine oder mehrere Umfangsrillen 4 auf der Außenseite der unteren Lagerschalenhälfte 3 Schmieröl unter hohem.Druck eingeführt. Dadurch wird die Lagerschale, die je bekanntlich einige zehntel Millimeter Spiel hat, gegen den Kurbelzapfen 1 gedrückt und bei dessen Verdrehung mitbewegt. Der Druck des Schmieröls wird durch eine kleine hydraulische Handpumpe 5 erzeugt, welche mit den Nuten 4 durch eine Leitung 6 verbunden ist. Die Nut 4 erstreckt sich etwa über einen Bereich von 901 ' Nach einer Drehung von etwa 451 kann die Schale leicht mittels eines in die Kurbelwelle eingeschraubten Mitnehmers 7 durch Weiterdrehen vollständig herausgedreht werden.the drawings show an exemplary embodiment of the device for carrying out the method. It shows F i g. 1 is a front view, FIG . 2 shows a section along line II-II of FIG. 1. The crankshaft 1 is mounted in a known manner in the bearing block 2 in the upper (not shown) and lower bearing shell 3 . To remove the bearing shell 3 without removing or lifting the crankshaft, the upper bearing cover with the upper bearing shell is removed and lubricating oil is introduced under high pressure into one or more circumferential grooves 4 on the outside of the lower bearing shell half 3. This is the bearing shell, each known to have a few tenths of a millimeter game, pressed against the crank pin 1 and moved in its rotation. The pressure of the lubricating oil is generated by a small hydraulic hand pump 5 which is connected to the grooves 4 by a line 6 . The groove 4 extends approximately over an area of 901 '. After a rotation of approximately 451, the shell can easily be completely unscrewed by further turning by means of a driver 7 screwed into the crankshaft.

Claims (2)

Patentansprüche: 1. Verfahren zum Ausbau der unteren Kurbelwellenlagerschalen von Brennkraftmaschinen, wobei die Lagerschale unter der Kurbelwelle herausgedreht wird, d a d u r c h g e k e n n - zeichnet, daß zwischen dem Lagerstuhl(2) und Lagerschale(3) ein hoher Flüssigkeitsdruck erzeugt wird, welcher die Schale(3) an den WeHenzapfen(1) preßt, worauf die Kurbelwelle verdreht wird. 1. A process for the expansion of the lower crankshaft bearings in internal combustion engines, wherein the bearing shell is rotated below the crankshaft, d a d u rch g e k hen - characterized in that a high liquid pressure is generated between the bearing bracket (2) and the bearing shell (3) , which presses the shell (3) against the WeHenzapfen (1), whereupon the crankshaft is rotated. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß auf der Außenmantelfläche der Lagerschale (3) eine oder mehrere sich über einen Teil des Umfangs erstreckende Nuten (4) vorgesehen sind, die mit der Druckleitung (6) einer hydraulischen Presse (5) verbunden sind. :. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Nuten (4) sich über einen Winkelbereich von etwa 901 erstrecken. 4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet,. daß während der- letzten Phase des Herausdrehens, während der kein Flüssigkeitsdruck. an der.Lagerschale mehr wirksam ist, in an sich bekannter Weise ein in den Wellenzapfen (1) einschraubbarer Afitnehmer (7) an der Lagerschale (3) angreift. jn gezo ..g#i##Drucksch. riften Deutsche Patentschriften Nr. 213 421, 331734, *863 155. 2. Apparatus for performing the method according to claim 1, characterized in that one or more grooves (4) extending over part of the circumference are provided on the outer circumferential surface of the bearing shell (3 ) which are connected to the pressure line (6) of a hydraulic press (5) are connected. :. 3. Apparatus according to claim 2, characterized in that the grooves (4) extend over an angular range of approximately 901 . 4. Apparatus according to claim 2, characterized in that. that during the last phase of unscrewing, during which no fluid pressure. on the bearing shell is more effective, engages in a manner known per se an in the shaft journal (1) screwable Afitnehmer (7) on the bearing shell (3) . jn drawn ..g # i ## pressure switch. rifte German patent specifications No. 213 421, 331 734, * 863 155.
DEM62218A 1964-08-26 1964-08-26 Method for removing the lower crankshaft bearing shells of internal combustion engines Pending DE1211025B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DEM62218A DE1211025B (en) 1964-08-26 1964-08-26 Method for removing the lower crankshaft bearing shells of internal combustion engines
CH1004065A CH437916A (en) 1964-08-26 1965-07-16 Method for removing the lower crankshaft bearing shells of internal combustion engines
NL6509489A NL6509489A (en) 1964-08-26 1965-07-22
DK385465AA DK106475C (en) 1964-08-26 1965-07-27 Method for disassembling the lower crankshaft bearing shells in internal combustion engines, as well as an internal combustion engine adapted to perform the method.
GB33455/65A GB1055408A (en) 1964-08-26 1965-08-04 Improvements in or relating to internal combustion engines
US481774A US3413709A (en) 1964-08-26 1965-08-23 Method of removing crankshaft bearing bushings from internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM62218A DE1211025B (en) 1964-08-26 1964-08-26 Method for removing the lower crankshaft bearing shells of internal combustion engines

Publications (1)

Publication Number Publication Date
DE1211025B true DE1211025B (en) 1966-02-17

Family

ID=7310395

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM62218A Pending DE1211025B (en) 1964-08-26 1964-08-26 Method for removing the lower crankshaft bearing shells of internal combustion engines

Country Status (6)

Country Link
US (1) US3413709A (en)
CH (1) CH437916A (en)
DE (1) DE1211025B (en)
DK (1) DK106475C (en)
GB (1) GB1055408A (en)
NL (1) NL6509489A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19617599C1 (en) * 1996-05-02 1997-10-30 Man B & W Diesel Ag Device for fitting bearing shell half in internal combustion engine
ITCO20120013A1 (en) * 2012-04-04 2013-10-05 Nuovo Pignone Srl INSTRUMENT AND MAINTENANCE METHOD FOR A SET OF DIFFUSED CLUTCH BEARINGS AND A ROTATING MACHINE WHICH USES THEM
DE102016004154A1 (en) * 2016-04-06 2017-10-12 Man Truck & Bus Ag Apparatus and method for resetting a bearing cup slid out of a receptacle on a shaft
CN107352394A (en) * 2016-05-10 2017-11-17 深圳市能源环保有限公司 A kind of rubbish hangs the opposite opened shaft connector for grabbing valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654689A (en) * 1970-06-03 1972-04-11 Eis Automotive Corp Method and apparatus of assembling and disassembling hydraulic disc brake calipers
CA2444869A1 (en) * 2002-10-21 2004-04-21 The Boeing Company Method and apparatus for actuating movable components, including canards, over multiple ranges

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE213421C (en) *
DE331734C (en) * 1916-07-19 1921-01-14 Siemens Schuckertwerke G M B H Lubrication arrangement for heavily loaded bearings
DE863155C (en) * 1941-07-12 1953-01-29 Kugelfischer G Schaefer & Co Device for facilitating the removal of large roller bearings in particular that are fastened with sleeves

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1753771A (en) * 1927-12-27 1930-04-08 Timken Roller Bearing Co Process of removing bearings from axles
US1843463A (en) * 1930-07-24 1932-02-02 Skayef Ball Bearing Company Separation of taper-fitted parts
US2564670A (en) * 1942-12-31 1951-08-21 Skf Ind Inc Press fitted joint and means for separating the members thereof
US2594810A (en) * 1949-06-15 1952-04-29 Erwin L Schaub Method of relining worn bearing surfaces
US2764437A (en) * 1951-05-31 1956-09-25 Skf Ind Inc Press fitting joint and means for making and separating the same
US2817142A (en) * 1952-07-19 1957-12-24 Timken Roller Bearing Co Hydraulic assembly for removing interference-fitted rings
US2955350A (en) * 1958-08-08 1960-10-11 Gen Electric Bearing for a rotary shaft
US3241895A (en) * 1963-05-27 1966-03-22 Torrington Co Separation means for shaft bearings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE213421C (en) *
DE331734C (en) * 1916-07-19 1921-01-14 Siemens Schuckertwerke G M B H Lubrication arrangement for heavily loaded bearings
DE863155C (en) * 1941-07-12 1953-01-29 Kugelfischer G Schaefer & Co Device for facilitating the removal of large roller bearings in particular that are fastened with sleeves

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19617599C1 (en) * 1996-05-02 1997-10-30 Man B & W Diesel Ag Device for fitting bearing shell half in internal combustion engine
ITCO20120013A1 (en) * 2012-04-04 2013-10-05 Nuovo Pignone Srl INSTRUMENT AND MAINTENANCE METHOD FOR A SET OF DIFFUSED CLUTCH BEARINGS AND A ROTATING MACHINE WHICH USES THEM
WO2013150017A1 (en) * 2012-04-04 2013-10-10 Nuovo Pignone Srl Maintenance tool and method for a split friction bearing assembly and rotary machine using the same
RU2630398C2 (en) * 2012-04-04 2017-09-07 Нуово Пиньоне СРЛ Method and instrument for maintenance of split plain bearing assembly and rotary machine wherein it is used
US9981352B2 (en) 2012-04-04 2018-05-29 Nuovo Pignone Srl Maintenance tool and method for a split friction bearing assembly and rotary machine using the same
DE102016004154A1 (en) * 2016-04-06 2017-10-12 Man Truck & Bus Ag Apparatus and method for resetting a bearing cup slid out of a receptacle on a shaft
CN107352394A (en) * 2016-05-10 2017-11-17 深圳市能源环保有限公司 A kind of rubbish hangs the opposite opened shaft connector for grabbing valve

Also Published As

Publication number Publication date
DK106475C (en) 1967-02-06
CH437916A (en) 1967-06-15
GB1055408A (en) 1967-01-18
NL6509489A (en) 1966-02-28
US3413709A (en) 1968-12-03

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